JPH11292058A - Corrugated fiberboard box and packaging box for ventilating fan - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a corrugated fiberboard box having little intrusion of inner flaps into the box even in the case where a compressive load is applied thereto. SOLUTION: This hexahedral corrugated fiberboard box has a developed shape having four rectangular faces 3 connected to one another through folding lines 2 as boundaries, and inner flaps 6 or outer flaps 7 connected to both sides of the respective rectangular faces 3 through folding lines 4 or 5 as boundaries, and has circumferential side faces formed with the rectangular faces 3 by folding the respective folding lines 2, 4, 5, and a lid and a bottom formed with the inner flaps 6 and the outer flaps 7, respectively. In connection with the folding lines 4, 5 which are the boundaries among the respective rectangular faces 3 and the inner flaps 6 or the outer flaps 7, the folding lines 4 for the inner flaps 6 are formed in a discontinuously linear manner relative to the folding lines 5 for the outer flaps 7 so as to have a step α inwardly from the folding lines 5 for the outer flaps 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a corrugated cardboard box having a hexahedron structure with a bottom and a lid and a ventilating fan packing box made of corrugated paper for packaging a ventilating fan having a grill on the front surface.

[0002]

2. Description of the Related Art This type of packaging box and ventilation fan packaging box are of the JIS-A1 type and have a developed shape as shown in FIG. That is, the inner flap 32 and the outer flap 33 are connected to each other on both sides of the four rectangular surfaces 31 continuously formed with the bending ruled line 30 as a boundary. The four rectangular surfaces 31 form the peripheral side surface of the cardboard box, the two outer flaps 33 on one side and the inner flap 32 form a bottom, and the two outer flaps 33 on the other side form two surfaces. The inner flap 32 forms a lid. The bending rule 30 of the outer flap 33 and the inner flap 32 is formed on the same straight line, and the lid and the bottom are assembled by bending the inner flap 32 and bending the outer flap 33 to the outside thereof. Such a cardboard box is widely used as a packaging box for various kinds of articles, and has been conventionally used as a ventilation fan packaging box as shown in Japanese Patent Publication No. Hei 1818624.

[0003] When a ventilation fan is packaged using a ventilation fan packaging box, a buffer member such as a holder is interposed between the ventilation fan and the ventilation fan packaging box as shown in the above-mentioned publication to protect the ventilation fan. Can be However, in order to achieve the problems of resource saving, dust reduction, and cost reduction, various measures have been taken to reduce the number of buffer members as much as possible. For example, the strength of the frame and grill of the ventilation fan is slightly increased, and a cushioning member such as a holder is eliminated as shown in FIG. 10 for packaging, a gap is provided between the cardboard box and the ventilation fan 34, and the cardboard box itself is cushioned. There are also ways to add functions.

[0004]

In the above-mentioned conventional cardboard box and ventilating fan packaging box, the bending rule 30 of the outer flap 33 and the inner flap 32 constituting the bottom and the lid is formed on the same straight line. Therefore, when the bottom and the lid are assembled to form a box and sealed with a sealing tape or the like, the outer flap 33 presses the vicinity of the bending rule 30 of the inner flap 32 as shown in FIG.
Will enter the interior diagonally. If a compressive load is applied during storage or cargo handling in this state, there is a problem in that the free end of the inner flap 32 is further increased as shown in FIG. In the ventilation fan 34, as shown in FIG.
And the grill 35 is easily damaged.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and an object thereof is to obtain a cardboard box in which an inner flap hardly enters even when a compressive load is applied. In addition, it is possible to reduce the size of the packaging material and to reduce the cost, and to obtain a ventilation fan packaging box in which the inner flap hardly enters even when a compressive load is applied.

[0006]

In order to achieve the above object, according to the present invention, there are provided four rectangular surfaces which are continuously provided with the bending rule lines as boundaries, and bending rule lines provided on both sides of each of the four rectangular surfaces. Forming a developed shape having an inner flap and an outer flap continuously provided as a boundary, a peripheral surface is formed by a square surface by bending each bending ruled line, and a lid and a bottom are formed by the inner flap and the outer flap, respectively. For the hexahedral corrugated cardboard box, the bending rule that is the boundary between each square face, the inner flap and the outer flap, and the bending rule for the inner flap with a step inside from the bending rule for the outer flap with respect to the bending rule of the outer flap Means for forming a discontinuous straight line is employed.

According to a second aspect of the present invention, in order to achieve the above object, the bending rule for the inner flap is formed inside the bending rule for the inner flap with a step larger than the thickness of the corrugated paper. Adopt means.

According to a third aspect of the present invention, in order to achieve the above object, the bent ruled line for the inner flap is changed from the bent ruled line for the outer flap constituting the lid of the box in the means according to any one of the first and second aspects. Is formed with a step inside.

According to a fourth aspect of the present invention, in order to achieve the above object, a bending ruled line for the inner flap from the bent ruled line for the outer flap constituting the lid and bottom of the box in the means according to any one of the first and second aspects. Means for forming each of the bent ruled lines with a step inside is employed.

[0010] In order to achieve the above object, the invention according to claim 5 is characterized in that four square surfaces continuously provided with a bending ruled line as a boundary;
Each of the four square faces has a developed shape having an inner flap and an outer flap continuously provided with a bending ruled line as a boundary on both sides, and a peripheral surface is formed by a square surface by bending each bending ruled line, and the inner flap and Regarding the ventilation fan packaging box consisting of a hexahedral cardboard box in which the lid and the bottom are respectively formed by the outer flaps, the bending ruled line that is the boundary between each square surface, the inner flap and the outer flap, and the inner side from the bending ruled line for the outer flap The bending rule for the flap is formed in a discontinuous straight line to the bending rule of the outer flap with a step on the inside, and the grill constituting the front of the ventilation fan is set to the lid side by the outer flap and the inner flap, and the lid Means for holding and holding a gap therebetween is adopted.

According to a sixth aspect of the present invention, in order to achieve the above object, the outer edge of the inner flap constituting the lid in the means according to the fifth aspect is provided with a bent edge portion having a double structure by bending. Is adopted.

In order to achieve the above object, a seventh aspect of the present invention adopts a means for forming the bent edge portion on the both sides of the adjacent outer flap side in the means according to the sixth aspect.

According to an eighth aspect of the present invention, in order to achieve the above object, the bent edge portion in the means according to the sixth aspect is formed continuously on both sides of the adjacent outer flap side and the outer edge of the inner flap. The means to do is adopted.

[0014]

Embodiments of the present invention will now be described with reference to the drawings. Embodiment 1 FIG. The cardboard box 1 according to the first embodiment shown in FIGS. 1 to 3 is a JIS-A1 type having a hexahedron with a bottom and a lid. As shown in FIG. 1, the developed shape of the corrugated cardboard box 1 is defined by four rectangular surfaces 3 continuously arranged with the bending ruled line 2 as a boundary, and bending ruled lines 4 and 5 on both sides of each of the four rectangular surfaces 3 with the boundary. This is a flat corrugated cardboard sheet having an inner flap 6 and an outer flap 7 provided continuously. The four rectangular surfaces 3 constitute the front surface, the back surface, and the two wives surfaces of the cardboard box 1, and the rectangular surface 3 located at one of the extreme ends has the rectangular surface 3 located at the other extreme end. The fixing piece 8 for connecting with the connecting member is provided continuously. Outer flaps 7 are provided on both sides of every other square face 3, and inner flaps 6 are provided on both sides of the square face 3 adjacent to the square face 3 on which the outer flap 7 is provided.

The bending ruled lines 4 and 5 which are boundaries between the rectangular surface 3 and the inner flap 6 and between the rectangular surface 3 and the outer flap 7 are such that the bending ruled line 4 for the inner flap 6 is more inward than the bending ruled line 5 for the outer flap 7. It is formed as a discontinuous straight line with respect to the bending ruled line 5 of the outer flap 7 with α. This step α
Is basically larger than the thickness of the corrugated paperboard, and is actually set to about 3 mm to 8 mm. This corrugated cardboard sheet is folded in all bending lines 2, 4, and 5 in a mountain fold or a valley fold, and a square surface 3 located at one of the extreme ends and a square surface 3 located at the other extreme end are formed. By connecting and fixing the fixing pieces 8 with an adhesive or the like, the hexagonal cardboard box 1 can be assembled. This cardboard box 1
Each square surface 3 forms a peripheral side surface, and the inner flap 6 and the outer flap 7 form a lid 9 and a bottom 10, respectively. Two outer flaps 7 and two inner flaps 6 constituting the bottom 10 and the lid 9 are respectively bent at the bending ruled line 4 after the inner flaps 6 are bent, and then the outer flaps 7 are bent at the bending ruled line 5 to form the inner flap. The outer flap 7 is superimposed on the outside of 6 and assembled. When storing the article 11, the bottom 1
0 is sealed with a sealing tape 12 or the like at the free end side of the outer flaps 7, and after the article 11 is stored, the inner flap 6 of the lid 9 is bent, and then the outer flap 7 is bent and the outer flap 7 is closed. Sealing tape 1 at the free end side
Seal with 2 etc.

In the corrugated cardboard box 1, the bending rules 5 and 4 of the outer flap 7 and the inner flap 6 constituting the bottom 10 and the lid 9 are not formed on the same straight line, and the bending rule 4 of the inner flap 6 is As shown in FIG. 2, the inner flap 6 is bent by the outer flap 7 as shown in FIG. The vicinity of the ruled line 4 is not pressed, and the inner flap 6 hardly enters the inside of the cardboard box 1 obliquely. Therefore, even if a compressive load is applied during storage or cargo handling, the free end of the inner flap 6 does not enter, so that the stored article 11 can be prevented from being damaged by the inner flap 6. In the corrugated cardboard box 1, the bottom 10 bears the load of the articles 11 to be stored, so the outer flap 7 and the inner flap 6 of the bottom 10 are:
Although it is not always necessary to set the step α, in order to package a relatively lightweight article 11 without a buffer member such as a holder, a gap 13 for cushioning is provided between the cardboard box 1 and the article 11. Therefore, it is better to set the step α on the outer flap 7 and the inner flap 6 on both the bottom 10 and the lid 9.

As described above, the cardboard box 1 according to the first embodiment is suitable for storing an article 11 in which a weak portion is located on the lid 9 side. For example, the present invention can be applied to a ventilation fan packaging box in which a ventilation fan 16 having a grill 15 on the front surface of a frame 14 like an article 11 shown in FIG. 2 is packaged without using a buffer member or the like. In this type of ventilation fan 16, the grill 15 made of plastic or the like is easily damaged.
In order to adopt a packaging form in which the cardboard box 1 performs a buffering function without using a buffering member such as a holder, the inner flap 6 is used.
This corrugated cardboard box 1 is suitable because the inner flap 6 does not hit the grill 15 even when a compressive load is applied, and the packaging material for the ventilation fan packaging can be reduced.

Embodiment 2 FIG. The second embodiment shown in FIGS. 4 to 6 relates to a ventilation fan packaging box made of corrugated cardboard, and has the same basic configuration as the cardboard box 1 shown in the first embodiment. Therefore, the same or corresponding parts as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and description thereof will be omitted.

This ventilation fan packaging box 1 is for packaging a ventilation fan 16 which is curved so that a grill 15 constituting the front surface as shown in FIG. . In the ventilation fan 16 having such a configuration, when a compressive load is applied to the central portion of the grill 15, the grill 15
Is easily damaged. Therefore, even if a compressive load is applied to the ventilation fan packaging box 1, as shown in FIG. 4, the outer edge of the inner flap 6 is placed on the outer edge of the inner flap 6 so that the load is not applied to the center of the grill 15 stored facing the lid 9. A bent edge portion 17 having a double structure is formed by bending. The bending edge portion 17 is defined in a rectangular shape by a notch 18 and a bending ruled line 19 on both sides on the side of the outer flap 7 adjacent to each of the inner flaps 6 constituting the lid 9. As shown in FIG. 5, four portions of the inner flap 6 of the lid 9 near the rectangular surface 3 have a double structure (a triple structure when the outer flaps 7 are combined).

As shown in FIG. 5, the ventilation fan 16 is housed in a state where a gap 13 is formed around the grill 15 with the lid 15 facing the bottom so that the end face of the motor 20 contacts the bottom surface of the ventilation fan packaging box 1. When a compressive load is applied during loading, the lid 9 sinks inward as shown in FIG. However, the four double-structured portions of the lid 9 correspond to the four strong corners of the grill 15 and the center of the grill 15 is held in the space 21 inside the four double-structured portions. Damage will be avoided. However, this ventilation fan packaging box 1 in which a bent edge portion 17 is formed on the inner flap 6 is used.
Can also be applied to the ventilation fan 16 of the flat grill 15,
It is possible to prevent a compressive load from being applied to the central portion of the relatively weak grill 15 having no support structure inside. Other configurations and functions are the same as those of the cardboard box 1 of the first embodiment.

Embodiment 3 The third embodiment shown in FIGS. 7 and 8 relates to a ventilating fan packaging box made of corrugated cardboard as in the second embodiment, and has a basic configuration of the cardboard box 1 or 2 shown in the first and second embodiments. It is the same as the ventilation fan packaging box 1. Therefore, the same parts as those in the first and second embodiments are denoted by the same reference numerals as those in the first and second embodiments, and the description thereof will be omitted.

The ventilating fan packaging box 1 according to the third embodiment has an inner flap 6 constituting a lid 9 as shown in FIG.
Is formed in an inverted U shape continuously on both sides of the adjacent outer flap 7 and the outer edge of the inner flap 6. When this bent edge portion 17 is bent at the bending ruled line 19, as shown in FIG. 8, the two bent edge portions 17 face the outside of the inner flap 6 and the portion concerned has a double structure (a triple structure when the outer flap 7 is combined). Becomes As a result, similarly to the second embodiment, the central portion of the grill 15 is protected by the space surrounded by the two bending edges 17, and the peripheral portion of the grill 15 that is strong even when a compressive load is applied is strong. Embodiment 2 will be taken over by a wide range.
The resistance to a compressive load can be made higher than that of In addition, the bending edge portion 17 is continuous and can support the load applied to the width direction of the inner flap 6 in the width direction, so that the resistance is increased. Other configurations and functions are the same as those of the first embodiment.

[0023]

As is apparent from the above description of the embodiment, according to the first aspect of the present invention, the inner flap hardly enters even when a compressive load is applied, and the stored articles are prevented from being damaged. A corrugated cardboard box can be obtained.

According to the second aspect of the present invention, it is possible to further prevent the inner flap from entering due to the application of a compressive load, in addition to the effect according to the first aspect.

According to the third aspect of the invention, the configuration is simplified along with the effect according to the first or second aspect.

According to the fourth aspect of the present invention, it is possible to prevent entry of the inner flap of the bottom and the lid together with the effect according to the first or second aspect.

According to the fifth aspect of the present invention, it is possible to obtain a ventilating fan packaging box which can reduce the size of the packaging material and reduce the cost and hardly allow the inner flap to enter even when a compressive load is applied.

According to the invention of claim 6, together with the effect of claim 5, the function of protecting the grill is improved.

According to the seventh aspect of the present invention, it is possible to easily configure the apparatus according to the sixth aspect of the present invention.

According to the eighth aspect of the present invention, the protection function is further improved together with the effect according to the sixth aspect.

[Brief description of the drawings]

FIG. 1 is a development view of a cardboard box according to the first embodiment.

FIG. 2 is a cross-sectional view of the cardboard box according to the first embodiment.

FIG. 3 is a front view showing a ventilation fan as an example of an article stored in the cardboard box according to the first embodiment.

FIG. 4 is a development view of the ventilation fan packaging box according to the second embodiment.

FIG. 5 is a cross-sectional view of the ventilation fan packaging box according to the second embodiment.

FIG. 6 is a sectional view showing a state where a compressive load is applied to the ventilation fan packaging box according to the second embodiment.

FIG. 7 is a development view of the ventilation fan packaging box according to the third embodiment.

FIG. 8 is a plan view showing the ventilation fan packaging box according to the third embodiment without an outer flap.

FIG. 9 is a development view of a conventional cardboard box.

FIG. 10 is a cross-sectional view of a conventional ventilation fan packaging box.

FIG. 11 is a cross-sectional view showing a state in which a compressive load is applied to a conventional ventilation fan packaging box.

[Explanation of symbols]

1 cardboard box (ventilation fan packaging box), 2 bending ruled line,
3 square surface, 4 bending ruled line, 5 bending ruled line, 6
Inner flap, 7 outer flap, 9 lid, 10 bottom,
13 gaps, 15 grills, 16 ventilation fans, 1
7 bend margin, 18 cut, 19 bend rule,
21 space.

Claims (8)

[Claims] 1. An unfolded shape having four rectangular surfaces continuously formed with a bent ruled line as a boundary, and an inner flap and an outer flap continuously provided with a bent ruled line as a boundary on both sides of each of the four rectangular surfaces. None, a hexahedral cardboard box in which a peripheral surface is formed by the rectangular surface by bending each of the bending ruled lines, and a lid and a bottom are formed by the inner flap and the outer flap, respectively. Regarding the bending ruled line that is the boundary between the inner flap and the outer flap,
A cardboard box in which a bent ruled line for the inner flap is formed in a discontinuous straight line with a step inside the bent ruled line for the inner flap from the bent ruled line for the outer flap. 2. The cardboard box according to claim 1, wherein
A corrugated cardboard box in which a bent ruled line for an inner flap is formed inside a bent ruled line for an inner flap from a bent ruled line for an outer flap. 3. The corrugated cardboard box according to claim 1, wherein a bent ruled line for the inner flap is formed with a step inside from a bent ruled line for the outer flap constituting the lid of the box body. box. 4. The cardboard box according to claim 1, wherein the bent ruled line for the inner flap is more inward than the bent ruled line for the inner flap constituting the lid and bottom of the box. Cardboard box formed with 5. An unfolded shape having four rectangular surfaces continuously formed with a bending ruled line as a boundary, and an inner flap and an outer flap continuously provided with a bending ruled line as a boundary on both sides of each of the four rectangular surfaces. None, a ventilation fan packaging box consisting of a hexahedral cardboard box in which a peripheral surface is formed by the rectangular surface by bending each of the bending ruled lines, and a lid and a bottom are respectively formed by the inner flap and the outer flap, Regarding the bent ruled line which is the boundary between each square surface and the inner flap and the outer flap, the bent ruled line for the inner flap is stepped inward from the bent ruled line for the outer flap with a discontinuous straight line to the bent ruled line of the outer flap. So that the grill that constitutes the front of the ventilation fan is placed on the lid side with the outer flap and the inner flap and holds a gap between the lid and Ventilated fan packaging box. 6. The ventilation fan packaging box according to claim 5, wherein the outer edge of the inner flap constituting the lid is bent to form a bent edge portion having a double structure at the outer edge of the inner flap. 7. The ventilation fan packaging box according to claim 6, wherein the bent edges are formed on both sides of the adjacent outer flap side. 8. The ventilation fan packaging box according to claim 6, wherein the bent edge portion is continuously formed on both sides of the adjacent outer flap side and the outer edge of the inner flap.